BirdAnalyst
Species · Kentucky · BBS 2025 Release · 1966–2024

Bewick's Wren Population Trend in Kentucky

All statesForest birds

Bewick's Wren in Kentucky has collapsed: down 97% on the route-weighted index since 1968.

-97%Since 1968TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
29Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
34YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Bewick's Wren Trends in KentuckyNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Bewick's Wren has collapsed in Kentucky: down 97% on the route-weighted index since 1968.

Bewick's Wren Population Forecast in Kentucky

If the recent trend holds, Bewick's Wren in Kentucky is projected to stay roughly flat through 2012, near 0.00 (95% range 0.00–0.66). A 5-year backtest shows a typical error of ±1774.4%, with 20% of held-out values landing inside the 95% band.

n/aChange by 2012TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
0.00Projected 2012 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.6695% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±1774.4%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Bewick's Wren in Kentucky is projected to stay roughly flat through 2012, near 0.00 (95% range 0.00–0.66). A 5-year backtest shows a typical error of ±1774.4%, with 20% of held-out values landing inside the 95% band.19662012
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20080.000.000.66
20090.000.000.66
20100.000.000.66
20110.000.000.66
20120.000.000.66

Bewick's Wren Survey Routes in Kentucky

Routes recording Bewick's Wren in Kentucky.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Sulphur Lick319791978
Hustonville319681966
Hudson319741966
Sunnybrook219751969
Mcbrayer220031966
Glencoe219931966
Lovelacevile119671967
Canton119851981
Keysburg119851981
Cedar Grove119761967
Iron Bridge119681966
Pleasurevill119851984
Monticello119691968
Beattyville119681966
Levee119791966
Million119671966
Kings Mtn119851966
Hodgenville119951975
Merrimac120021967
Johnsonville120021966
Demunbruns119861966
Eastview119841967
Drakesboro119791979
Joy119941966
Shelbyville119701970

Bewick's Wren Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoidahoillinoisindianaiowakansasmarylandmississippimissourinevadanew-mexiconorth-carolinaohiooklahomaoregonpennsylvaniatennesseetexasutahvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.